| 摘要 |
A first prism 11a and a second prism 12a are joined together on a face-to-face basis. A dichroic mirror 13a is interposed into the junction plane to reflect only G-light. A first imaging device 111a receives the reflected light (G-light) with high sensitivity. In this manner, there is constructed an inexpensive light receiving unit 10a having the same visual sensitivity characteristic as eyes of a person. The light receiving unit 10a is disposed in an image taking apparatus.
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